Difference between revisions of "December 7, 2020 DIRC"

Revision as of 14:13, 7 December 2020

Meeting Information

GlueX DIRC Meeting
Monday December 7, 2020
1:00 pm, ET
Remote only

Connection Using Bluejeans

1. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 846453895.
2. To join via a Web Browser, go to the page [1] https://bluejeans.com/846453895 .
3. To join via phone, use one of the following numbers and the Conference ID: 846453895
   • US or Canada: +1 408 740 7256 or
   • US or Canada: +1 888 240 2560
4. More information on connecting to bluejeans is available.

Agenda

1. Announcements
2. South OB mirror box removal and evaluation (Bill, All)
   • UV dye test Friday and Monday (Bill)
   • One mirror (bottom plate) removed from the strong back: mirror and glass separated with residual DP270
   • Reflectivity setup (Bill)
3. Mirror prototype test plan (All)
   • Discussion of assembled prototypes
     • Liquid glass pieces
     • Silicone mold to form thin epoxy layer
     • DP270 samples with wider epoxy seal (air gap) and full epoxy sandwich being assembled
     • Epotek to be shipped this week
   • Other thoughts or suggestions?
4. Diffuser sealing update (Bill)
5. Replacement module tested (Bill)
6. DIRC commissioning analyses and 2020 studies (All)
   • Spring 2020 data production status (Justin)
   • Geometric reconstruction update (Ahmed/Roman)
     • Update on shift of the time difference
     • Reducing Photon Yield
   • FastDIRC update (Yunjie)
7. Follow-up on additional action items from workfest (All)
   • 100M event MC samples required for ρ and φ data/MC comparisons:
     • /volatile/halld/home/gxproj7/RunPeriod-2019-11/dircsim-2019_11-ver02/analysis/hd_root_gen_2pi_pass00.root
     • /volatile/halld/home/gxproj7/RunPeriod-2019-11/dircsim-2019_11-ver02/analysis/hd_root_gen_2k_pass00.root
8. AOB